Towards a universal manufacturing node: Requirements for a versatile, laser-based machine tool for highly adaptable manufacturing

Jarwitz, Michael; Traunecker, David; Arnim, Christian von; Müller, Niklas; Krämer, Steffen

doi:10.1016/j.procir.2022.08.090

Cited by 2 publications

(1 citation statement)

References 28 publications

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“…High-power lasers have been widely applied for precisely manufacturing and remanufacturing of metallic components in various industrial areas [1][2][3]. Direct energy deposition of metallic alloys can be realized by lasercladding in both powder-feeding and -bed configurations using the rapid heating and fast cooling characteristics of laser process [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Laser-treatment-induced surface integrity modifications of stainless steel

Gong

Wei

Meng

et al. 2023

Mater. Res. Express

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Scanning of high-power laser beam on surface of martensitic stainless steel (SS420) has been studied, addressing the effect of scanning rate V on integrity modifications in the near-surface regions. Structural, compositional, and crystallographic characterizations revealed the presence of ablations, surface melting/resolidification, surface oxidations, and austenite (γ-phase) precipitations when V ≤ 20 mm/s. Melt pool (MP), heat affected zone (HEA), and base material have been clearly distinguished at the cross-section of the slow-scanned samples. Adjacent MPs partially overlapped when V = 5 mm/s. The γ-phase precipitations solely occurred in the MPs, i.e., of ~ 400 μm deep for V = 5 mm/s, while oxidations dominantly occurred in the surface regions of shallower than ~30 μm within the MPs. Compositional analysis revealed increased Cr-, Mn-, and Si-to-Fe ratios at the laser-scanned surface but absence of variations along the surface normal direction. Hardened surface has been achieved up to 805 HV, and the hardening monotonically decreased when moving deeper (i.e., ~1000 μm) into the base material. These observations shed new lights on surface engineering of metallic alloys via laser-based direct energy treatments.

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